Medium Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.

Hot Water

Fuel Type To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.

Indirect Fired

Storage Type

Tank

Coils Quantity

1

Connection Type

NPT

Model

ST00214D

Performance

First Hour Delivery Sometimes called First Hour Rating, this is the number of gallons of hot water the heater can supply per hour when starting with a fully heated tank.

Dunkirk is one of the most established names in hydronic heating. Their reputation has been built over the years by ingenious design and perpetual innovation. Hotline indirect fired water heaters use the power and efficiency of your boiler to heat domestic water. A Hotline is capable of producing three to five times the hot water of a comparable electric or gas-fired water heater. To achieve such high volumes of hot water, Dunkirk used a counterflow design in the Hotline. Directing the boiler water to run contrary to the domestic hot water improves the heat transfer efficiency and provides a more even temperature. A self-cleaning drain valve means that servicing a Hotline water heater is a breeze. When it comes to quick, easy, and efficient domestic hot water, the Hotline truly shines.

Product Features

Amazing DurabilityHotline water heaters are built to withstand damage from within and without. To prevent scratches and gouges, Dunkirk wrapped the HL119SK in a steel jacket. The inner tank has two-fold protection against corrosion. The Hotline's cobalt porcelain enamel resists corrosion while a magnesium anode rod actively fights it.

Efficiency-Boosting InsulationHeat loss is an efficiency killer. Two inches of foam insulation keep the water in your Hotline hot so you aren't paying twice for energy that you're using once.